Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sun, 22 Feb 2015 16:39:24 -0800 (GMT-08:00)
Hello Group, A quick post regarding my RFI experience with CFL bulbs. I recently bought 3 brands of CFL bulbs at the local big-box DIY store for a nightstand lamp. I placed my SW portable on the nigh
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Mon, 23 Feb 2015 12:01:40 -0800 (GMT-08:00)
Hello Group, My apologies to the group. Pat, WA4TUK, is correct. The Cree "4 Flow" is an LED lamp. Thank you Pat! A few thoughts on the comments thus far. CFL are not designed for intermittent operat
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Mon, 6 Jul 2015 08:31:20 -0700 (GMT-07:00)
Hello Mike, I recently resolved an electric fence problem working alongside the local electric company RFI Investigator. What you describe are classic electric fence symptoms. You may find the articl
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Tue, 4 Aug 2015 21:30:15 -0700 (GMT-07:00)
Roger (K8RI) makes some germane and spot on points in his post. Back in 2011, a leaked letter ostensibly from the UK's GCHQ (similar to our National Security Agency, the intelligence collection and e
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sat, 5 Sep 2015 10:20:17 -0700 (GMT-07:00)
And the 4th largest employer in Oulu Finland? Nokia Siemens Networks. Interesting... Chris AF6PX _______________________________________________ RFI mailing list RFI@contesting.com http://lists.conte
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sun, 17 Jan 2016 16:17:15 -0800 (GMT-08:00)
Hello Group, Thought it may be helpful to share a powerline noise (PLN) case thats been dogging me for 3 years. It manifested itself as a very low level (almost at the noise floor) non-stop 120 Hz ra
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sun, 17 Jan 2016 21:30:23 -0800 (GMT-08:00)
Hello Jim et al., I will try to briefly answer your questions and then elaborate. The 3 year delay was due to my inability to positively locate the source. (Im just not that good.) No, the utility di
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Tue, 15 Aug 2017 15:04:08 -0700 (GMT-07:00)
Greetings, An RFI free LED bulb is a very welcomed product for any ham. But maybe someone much smarter than me can explain why a Genie garage door opener would need one. I'm pretty sure my garage doo
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Wed, 28 Mar 2018 12:00:45 -0700 (GMT-07:00)
Hello Group, Looking for any information or past experience with RFI caused from Faulted Circuit Indicators (they look like bob-weights, about the size and shape of a soda can) attached to overhead d
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Wed, 10 Nov 2021 01:57:55 +0000
Group, Investigating a 16kV distribution pole with 3 lightning arresters, one on each phase. All new poly hardware, composite crossarms, new cutouts, and full complement of wildlife guards. Excelle
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sat, 04 Nov 2023 22:05:46 +0000
Stephanie, No, it is definitely NOT corona. Corona is an EHV phenomenon, and appears only on transmission lines, not distribution lines such as the lines you described in a residential neighborhood.
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sun, 05 Nov 2023 03:06:10 +0000
Stephanie, Dave is exactly correct. I apologize; I misspoke. We locate the noise first and then determine the source. Then resolve the noise by elimination or mitigation. Hope this helps. Chris AF6PX
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sun, 05 Nov 2023 15:47:30 +0000
Stephanie, Jim brings up many good observations. My goal here is simply to provide you guidance to help you resolve your RFI issue. With the RFI present, connect your rig to run off battery power, an
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Sat, 03 Feb 2024 23:48:59 +0000
Alan, et al. As an RFI/power line noise (PLN) ARRL Technical Specialist, when Mike Martin speaks, I listen. Mike has decades of real-world experience with these matters. The following may help with s
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Wed, 06 Mar 2024 04:39:05 +0000
Wes, If the noise is centered around 1840 kHz, and the span is 320 kHz, this should place it within the upper range of an AM radio. (1700 kHz) You might try using a portable AM radio with a built in
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Thu, 07 Mar 2024 00:17:22 +0000
Wes, I also have the Sony ICF-SW7600GR. (US model) Keep in mind the built-in ferrite loop antenna is used only up to 1710 kHz. At 1711 kHz and above the radio switches to the telescopic rod antenna.
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Thu, 07 Mar 2024 15:15:39 +0000
Hi Wes, To answer your question, experience (been there, done that) and experimenting. I pulled out the old Wavetek 3001 signal generator to confirm the antenna transition frequency yesterday. Don's
Author: "Chris L. Parker" <parker601@earthlink.net>
Date: Fri, 08 Mar 2024 06:06:41 +0000
Wes, I will go out on a limb here. If you mean the pumping station near 5878 N Desert View Dr, I see two poles there. The northern pole (with the crossarm) appears to have 3 phase 7.2kV, which feed 3